Tractor.



l. BEARD.

TRACTOR.

APPUCATION FILEDJUNE 3.1916.

V. 0 N d ,M m Dl f ya@ mlm/m1 m1 im 'To all whom it may concern .ranas enano, or nos mos, cerimoniale.

Tesoros.

Lacasse.

Specification of Letters Patent.

Patented nl ov. 28, 11216..

Application iled .Tune 3, 1916. Serial No. 101,477.

Be it knovvn that 1, JAMEs'aBnARn, a citizen-0f the United States, and a resident of Dos Rios, in the county of Mendocino and lState of California, have invented anew and improved Tractor, of which the iollowing is a full, clear, and exact description. y

My invention relates to the type of trac- ,tor Wheel of which examples are shovvnin y United States AlPatents No. 1,106,182 granted to me August 4, 1,914, `and No. 1,155,872 granted to me October 5, 1915. rllhe Wheels illustrated in thesepatent's include a plurality of -oblong track sections disposed in angular reiationv to one another, and gear,

elements xed on fa shaft passing trans versely through the said elements and meshing with teeth or internal racks on vthe track sections-so that. the latter are alternately turned about the respective gear ele ments to present the track sections successively in horizontal positions for the forended position,

- tions and'to present "the plain Ward traveling thereon of the gear elements. The present improvement has in view the possibility of one of the track sections being stone or other relevation. inv

positioned on a the road when they said section is in upthus giving the remaining track sections a tendency to drop and thus engage the gear teeth at the opposite side of af gear Wheel, the result of 'which Would be to reverse the movement of the track section and disturb the normal relation of the respective sections. 4

To provide against'the contingency' referred to ll form the track sections with toothed'surfaces or racks between the ends thereof 'leaving plain, untoo'thed interior semi-circular surfaces at the ends between said tracks. Similarly, the respective gear elements ,are mutilated, being provided With toothed surfaces and plain surfaces at opposite4 sides and extending respectively on the Wheel to an extent to e'ect engagement of the teeth with the racks on the track sec- Wheels to the untoothed semi-circular surfaces atlthe ends of the track sections.

Reference is to be had to the accompanying drawings forming a part of this specification in which similar reference characters indicate corresponding parts in all the views. Figure 1 is a sectional side elevation of a tractor wheel, ernbodyingY my present invention; 2 is a horizontal section on the surfaces of the y I. line 2-2 Fic: l' `Fi 3 is a sectional side In carrying out my present invention, an

axle 10 is provided, and fixed thereon is a series of gear wheels 11. Jassociated with each gear wheel 11 is an oblong track section 12 provided on the interior thereof with teeth 13 with which the gear wheels 11 mesh. The respective track sections are rigid and non-deformable and are moved relatively to one another in response to the turning of the Wheels 11 With the axle 10. The several sections are disposed with their major axes in such angular relation that a longer side of one track section will always be on the ground. Also, it is to be observed that the exterior end surface 12a of the track sections are rounded that they may readily roll thereon in turning. In the illustrated example, three track sections are shown, that number being' effective in insuring an ample total surface in contact with the ground. A. Wheel l1 Will travel along its track section when the major axis of the latter is disposed horizontally until the forward end of said section is reached by the Wheel 11,

whereupon the said section Will be turned on ,l

the forward rounded end thereof. Thus, the respective sections will be brought successively into the'. horizontal position, the several sections being alternately and intermittently turned.

in accordance with my present invention the rear track section is formed with series of teeth 13, parallel With the major axis of the section on the' opposite Walls thereof. The said teeth are preferably formed by producing depressions 14 in the inner ion gitudinal surfaces of theA track sections. The opposite end surface 15 of each trackA section, at the interior, isl made plain or untoOthed. Similarly, each Wheel 11 is formed with teeth 11a on a portion of its peripheral surface and with a plain untoothed surface y and the plain corresponds apdepressions, desigY one side at a greater extend a total distanceto correi spond with the length .of series of depres-- 'aus plain semi-circular ft 1s A angle' than the remainder of the depressions lll,k the purpose of which is to give clearance y -te the end teeth 1la in leiving the racks" to Contact with the plain surfaces 15.

By the described arrengen'ient, the respective track sections will be turned by the gear Wheels 11 and should e track section,

While 11p-ended, ride upon a stone or other 5 elevationfin the read, the dropping of another section will not eiliect engagement of the upper side thereof with. the teeth of the corresponding gear Wheel ll.

The numeral 1G indicates side plates to house the gears, :ind 17 indicates slots in certain of said plttes t hermit thev nieve- "tending transversely through the track Sect1ons, nnd a series of Wheels on said axle,

one wheel foreach track seeticn, the'gear vlfheels presenting teeth to engage the teeth of the track sections and said wheels for n, portion 0l the periphery being -nntoothed te correspond with thc nntoethed end snrfaces of the track se Lions.

2. ln n tractor wheel, :i series ef sepnrnte,

self-laying, oblong truck sections, the sections being rigid und non-dcforumble :1nd

disposed side by side with their major :ities in nngular relation, sziil sections hau'inr in termal teeth :it opposite sides parallel, with the major axes of the sections, theends el the sections at the interior presenting nntecthed semi-circular surfaces, :in axle extendinfz,`- transversely through the tieel; sed

` tiens. and e series oil wheels on smid zixlc,

one Wheel for euch trechA section, the geur wheels presentingn teeth te engage the teeth of the track Sections und seid Wheels fer n portion ot the periphery being; nntoothed to correspond with the ynntoothed end surfaces the trnck'scctions; the teeth ci the truck sections alternating with depressions in the said sections and the end depressions having n greater fiere than the remaining' depressions to :iicrd clearance for the end teeth on the' Wheels in leaving the teeth or' the track sections.

5h MES B l?) All D. 

